US3220813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for removing impurities in manufacture of glass
Assignee: Compagnie de Saint Gobain SA
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Filing: 1962-03-08
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Granted: 1965-11-30
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Expires: 1982-03-08
Abstract
No abstract record available.
Inventors
- 👤 Nogard Georges
- 👤 Urban Rosino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:35
CPC Classifications
C; C03; C03B; C03B18/00; C03B18/02; C03B18/18
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
76 words
THE METHOD OF REMOVING FLOATING IMPURITIES, ESPECIALLY DISPERSED METAL OXIDES, FROM THE PART OF A METAL BATH WHICH IS IN PROXIMITY TO A MOLTEN SHEET OF GLASS TO AN AREA OF THE BATH REMOTE FROM THE GLASS, WHICH COMPRISES ENTRAINING THE IMPURITIES ON A MOVING SURFACE IMMERSED IN THE BATH NEAR THE SHEET OF GLASS AND CONDUCTING THE IMPURITIES THROUGH THE BATH ON THE MOVING SURFACE TO A PART OF THE BATH REMOTE FROM THE GLASS.
Claim 2
Independent Claim
76 words
THE METHOD OF REMOVING FLOATING IMPURITIES, ESPECIALLY DISPERSED METAL OXIDES, FROM THE PART OF A METAL BATH WHICH IS IN PROXIMITY TO A MOLTEN SHEET OF GLASS TO AN AREA OF THE BATH REMOTE FROM THE GLASS, WHICH COMPRISES ENTRAINING THE IMPURITIES ON A MOVING SURFACE IMMERSED IN THE BATH NEAR THE SHEET OF GLASS AND CONDUCTING THE IMPURITIES THROUGH THE BATH ON THE MOVING SURFACE TO A PART OF THE BATH REMOTE FROM THE GLASS.
Claim 3
Dependent Claim
116 words
GLASS MANUFACTURING APPARATUS INCLUDING A TANK ADAPTED TO CONTAIN MOLTEN METAL AND A GLASS SHEET IN CONTACT WITH THE METAL, CONTINUOUS SURFACE MEANS EXTENDING INTO THE TANK IN PROXIMITY TO A POSITION NEAR THE GLASS SHEET AND IN POSITION TO BE PARTIALLY SUBMERGED BY THE MOLTEN METAL, AND MEANS TO ROTATE THE CONTINUOUS SURFACE MEANS IN A MANNER SUCH THAT THE IMMERSED PORTIONS OF THE SURFACE MEANS MOVE IN A DIRECTION TOWARD THE EDGES OF THE BATH AS THE NON-IMMERSED PORTIONS OF THE SURFACE MEANS MOVE IN A DIRECTION TOWARDS THE SIDE OF THE GLASS SHEET, SAID CONTINUOUS SURFACE MEANS BEING ADAPTED TO ENTRAIN THEREON IMPURITIES CONTAINED IN THE BATH WHICH ARE NEAR THE GLASS SHEET.
Claim 4
Dependent Claim
116 words
GLASS MANUFACTURING APPARATUS INCLUDING A TANK ADAPTED TO CONTAIN MOLTEN METAL AND A GLASS SHEET IN CONTACT WITH THE METAL, CONTINUOUS SURFACE MEANS EXTENDING INTO THE TANK IN PROXIMITY TO A POSITION NEAR THE GLASS SHEET AND IN POSITION TO BE PARTIALLY SUBMERGED BY THE MOLTEN METAL, AND MEANS TO ROTATE THE CONTINUOUS SURFACE MEANS IN A MANNER SUCH THAT THE IMMERSED PORTIONS OF THE SURFACE MEANS MOVE IN A DIRECTION TOWARD THE EDGES OF THE BATH AS THE NON-IMMERSED PORTIONS OF THE SURFACE MEANS MOVE IN A DIRECTION TOWARDS THE SIDE OF THE GLASS SHEET, SAID CONTINUOUS SURFACE MEANS BEING ADAPTED TO ENTRAIN THEREON IMPURITIES CONTAINED IN THE BATH WHICH ARE NEAR THE GLASS SHEET.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |